Title:
STEEL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/145071
Kind Code:
A1
Abstract:
Provided is a steel material having a predetermined chemical composition satisfying 0.61[Zr]+0.31[Hf]-1.75[O]-3.99[N]-1.74[S]≥0.0003 (in the expression, [Zr], [Hf], [O], [N], and [S] are each the content [mass%] of an element), the steel material including grain boundaries which have a crystal orientation difference of 23-45° and in which the total segregation amount of Zr and Hf is at least 0.2 atoms/nm2.
Inventors:
ISHIKAWA KYOHEI (JP)
NAKADA KOHEI (JP)
KIMURA KEN (JP)
UMEHARA MIYURI (JP)
TAKAHASHI JUN (JP)
YAMASAKI SHINGO (JP)
NAKADA KOHEI (JP)
KIMURA KEN (JP)
UMEHARA MIYURI (JP)
TAKAHASHI JUN (JP)
YAMASAKI SHINGO (JP)
Application Number:
PCT/JP2021/014788
Publication Date:
July 07, 2022
Filing Date:
April 07, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C19/03; C22C19/05; C22C38/00; C22C38/60; C21D8/00; C22F1/00; C22F1/10
Foreign References:
| JPH09249935A | 1997-09-22 | |||
| JP2000063940A | 2000-02-29 | |||
| JP2020531689A | 2020-11-05 | |||
| JPH08193240A | 1996-07-30 | |||
| US20170298466A1 | 2017-10-19 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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